400 t金属打包机液压缸数值分析与优化设计
李响1,魏厚先2,陈永清*,1,2,唐善杰3,张友锋2
(1.三峡大学 水电机械设备设计与维护湖北省重点实验室,湖北 宜昌 443002;2.三峡大学 机械与动力学院,湖北 宜昌 443002;3.湖北力帝机床股份有限公司,湖北 宜昌 443002)
摘要:金属打包机液压缸在工作状态下往往会受到高压载荷作用,其应力集中区域主要分布在液压缸缸筒和方法兰的连接处。研究利用有限元数值模拟技术对400 t液压缸在工作状态下缸筒和方法兰连接处的受力情况进行了仿真模拟,具体分析了焊接加强筋、焊接加强筋半径、方法兰厚度以及焊缝宽度对液压缸强度的影响,最后通过理论分析和数据拟合得出较为合理的结构与尺寸。分析结果显示,液压缸与方法兰连接处添加焊接加强筋,焊接加强筋的半径为50 mm为宜,方法兰厚度为170 mm,焊缝的宽度为50 mm,这样得出的400 t液压缸整体结构更为稳定。
关键词:400 t液压缸;数值模拟;焊接加强筋;方法兰;焊缝宽度
中图分类号:TH137.51 文献标志码:A doi:10.3969/j.issn.1006-0316.2020.03.002
文章编号:1006-0316 (2020) 03-0007-07
Numerical Analysis and Optimization Design of Hydraulic Cylinder of 400 t Metal Baler 
LI Xiang1,WEI Houxian2,CHEN Yongqing1,2,TANG Shanjie3,ZHANG Youfeng2
( 1.Hubei Key Laboratory of Hydroelectric Machinery Design and Maintenance, Three Gorges University, Yichang 443002, China; 2.School of Machinery and Power, Three Gorges University, Yichang 443002, China; 3.Hubei Lidi Machine Tool Co., Ltd., Yichang 443002, China )
Abstract:Hydraulic cylinder of metal baler is often subjected to high pressure load under working condition, and its stress concentration areas are mainly distributed at the junction of the cylinder barrel and the flange. In this study, the finite element numerical simulation technology is used to simulate the stress on the junction of cylinder barrel and the flange of 400 t hydraulic cylinder under working condition. And the influence of welding reinforcement, the radius of welding reinforcement, the thickness of the flange and the width of the weld seam on the strength of hydraulic cylinder are analyzed in detail. Finally, the reasonable structure and size are obtained through theoretical analysis and data fitting. The analysis results show that when the radius of the welding reinforcement is 50 mm, the thickness of the flange is 170 mm, and the width of the welding seam is 50 mm, the overall structure of the 400 t hydraulic cylinder is more stable after adding the welding reinforcement to the junction of the hydraulic cylinder and the flange.
Key words:400 t hydraulic cylinder;numerical simulation;welding reinforcement;flange;weld width
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收稿日期:2019-09-25
基金项目:国家自然科学基金资助项目(51305232);湖北省教育厅科学技术研究计划重点项目(D20181206);水电机械设备设计与维护湖北省重点实验室开放基金资助项目(2017KJX04)
作者简介:李响(1979-),男,湖北武汉人,博士,副教授、硕士生导师,主要研究方向为夹层结构设计与优化、结构轻量化设计、数值模拟技术、结构强度与可靠性等。*通讯作者:陈永清(1965-),男,湖北麻城人,工学硕士,副教授、硕士生导师,主要研究方向为工程施工特种工程机械的设计、水电施工专业设备的设计、进口工程机械配件的国产化技术等,E-mail:451976900@qq.com;cyq@ctgu.edu.cn
 

 

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